diff --git a/yamllint/rules/empty_values.py b/yamllint/rules/empty_values.py
index 848684f..9907fd2 100644
--- a/yamllint/rules/empty_values.py
+++ b/yamllint/rules/empty_values.py
@@ -93,6 +93,7 @@ import yaml
 
 from yamllint.linter import LintProblem
 
+
 ID = 'empty-values'
 TYPE = 'token'
 CONF = {'forbid-in-block-mappings': bool,